From Wikipedia, the free encyclopedia David Della Rocco (Born May 4, 1952) is an Italian-American comedian and actor best known for his supporting role in the 1999 cult film The Boondock Saints, in which he played a character also named David Della Rocco (though usually just called "Rocco" and "Roc") Della Rocco brought many of his real-life mannerisms and flair to the character, making an impre... show more